399
FXUS65 KBYZ 171942
AFDBYZ
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT
142 PM MDT SAT OCT 17 2026
KEY MESSAGES
- WINDY OVER AND NEAR THE MOUNTAINS AND FOOTHILLS TODAY,
ESPECIALLY OVER THE FOOTHILLS WEST OF BILLINGS.
- GUSTY CROSSWINDS WILL IMPACT TRAVEL ALONG INTERSTATE 90 FROM BIG
TIMBER TO LIVINGSTON. GUSTY CROSSWINDS MAY ALSO IMPACT HIGHWAY
191 FROM BIG TIMBER TO HARLOWTON.
- SEASONABLY WARM AND MAINLY DRY CONDITIONS CONTINUE INTO NEXT
WEEK.
DISCUSSION
TODAY THROUGH FRIDAY...
SEASONABLY WARM AND DRY CONDITIONS EXIST TODAY UNDER A RIDGE OF
HIGH PRESSURE ALOFT. OVER AND NEAR THE MOUNTAINS AND FOOTHILLS,
THE COMBINATION OF STRONGER WINDS ALOFT AND A FAVORABLE SURFACE
PRESSURE GRADIENT IS RESULTING IN BREEZY TO WINDY CONDITIONS,
ESPECIALLY OVER THE FOOTHILLS WEST OF BILLINGS (LIVINGSTON TO NYE
AND BIG TIMBER TO HARLOWTON). THIS MORNING, PEAK WIND GUSTS IN THE
40S AND 50S (MPH) WERE COMMON IN THESE AREAS. LOOK FOR WINDS TO
REMAIN BREEZY THIS AFTERNOON, WHILE GRADUALLY SUBSIDING INTO THIS
EVENING. TONIGHT, A DRY COLD FRONT PASSAGE WILL END ANY REMAINING
WINDY CONDITIONS ACROSS THE REGION.
SUNDAY WILL BE A SLIGHTLY COOLER DAY WITH HIGH TEMPERATURES IN
THE 60S FOR MOST. WINDS WILL BE LIGHTER BUT STILL BREEZY OUT OF
THE EAST AT TIMES.
MONDAY WILL SEE SEASONABLY WARM CONDITIONS RETURN AS A RIDGE OF
HIGH PRESSURE NUDGES BACK INTO THE REGION. OVER THE PLAINS OF
EASTERN MONTANA (GENERALLY EAST OF ROSEBUD COUNTY), BREEZY
SOUTHEASTERLY WINDS ARE EXPECTED TO DEVELOP LATE SUNDAY NIGHT,
PEAKING DURING THE DAY MONDAY WHEN WIND GUSTS IN THE 20S AND 30S
(MPH) ARE FORECAST.
TUESDAY INTO THE SECOND HALF OF THE WEEK LOOK TO REMAIN
SEASONABLY WARM AND MAINLY DRY, THOUGH A DEVELOPING LOW PRESSURE
SYSTEM OFF THE WEST COAST OF THE UNITED STATES MAY OCCASIONALLY
EJECT ENERGY AND MOISTURE INTO OUR SOUTHERN MOUNTAINS, ALLOWING AN
OCCASIONAL SLIGHT CHANCE OF PRECIPITATION. BY LATE NEXT WEEK,
THIS LOW PRESSURE SYSTEM IS EXPECTED TO MOVE ONSHORE. HOW EXACTLY
THIS OCCURS REMAINS UNCERTAIN. THEREFORE, WHILE THIS WEATHER
SYSTEM COULD IMPACT OUR REGION LATE NEXT WEEK, A LOT OF
UNCERTAINTY REMAINS. LA
AVIATION
WINDY CONDITIONS WILL CONTINUE OVER SOUTH-CENTRAL MONTANA TODAY,
ESPECIALLY AROUND KLVM TO K6S0. EXPECT WINDS TO GRADUALLY DECREASE
THROUGH THE AFTERNOON AND EVENING HOURS AHEAD OF A COLD FRONT
PASSAGE TONIGHT. THIS FRONT WILL CAUSE WINDS TO SHIFT OUT OF THE
NORTHWEST THEN EAST ON SUNDAY. A BRIEF PERIOD OF LOW-LEVEL WIND
SHEAR IS POSSIBLE AROUND KMLS TO KBHK LATE TONIGHT AS THE FRONT
MOVES THROUGH. OTHERWISE, VFR CONDITIONS WILL PREVAIL. LA
PRELIMINARY POINT TEMP/POPS
SUN MON TUE WED THU FRI SAT
-----------------------------------------------------------
BIL 043/062 038/068 044/070 041/066 045/073 048/066 042/055
00/U 00/U 00/B 00/U 00/U 35/W 62/W
LVM 039/062 035/072 040/070 038/068 041/072 042/060 035/050
00/B 00/U 00/B 10/U 01/U 47/W 72/W
HDN 039/066 036/070 038/070 038/069 040/074 045/067 042/057
00/U 00/U 00/U 00/U 00/U 25/W 63/W
MLS 043/063 044/070 042/068 041/065 045/073 049/068 044/055
00/B 00/U 00/U 00/U 00/U 14/W 53/W
4BQ 045/064 044/069 045/071 043/067 049/076 052/070 045/055
00/U 00/U 00/U 00/U 00/U 14/W 64/W
BHK 043/065 038/066 039/072 039/066 043/076 048/073 041/056
00/U 00/N 00/U 00/U 00/U 13/W 54/W
SHR 041/064 036/068 040/071 039/068 042/074 045/067 040/055
00/U 00/U 00/U 00/U 00/U 25/W 74/W
BYZ WATCHES/WARNINGS/ADVISORIES
MT...NONE.
WY...NONE.
WEATHER.GOV/BILLINGS
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